Originally Posted by
ger21
Yes, the faster the accel, the more accurately the tool can follow the programmed path. It will look more jerky, and can cause machine flex if the machine isn't rigid enough.
But generally, the faster the accel, the more accurate your machine can cut. Faster accel can also greatly increase feedrates during 3D cutting, or ar least allow you to use faster feedrates.
At 60ipm, accel higher than 20 won't make nearly as much difference as it would at 300-400ipm. I actually get decent results cutting at 150ipm with an accel of 10.
I'm designing my new machine to hopefully be capable of an accel of 388 (1G). But it may be far too jerky to actually use.